论文部分内容阅读
一、引言河北省北部地区,在震旦系上部雾迷山白云岩与燕山期花崗閃长岩接触处,普遍发生有接触变貭現象——矽嘎岩化;伴随这种变貭作用,常常有接触交代矿床产生,如寿王坆銅矿床就是一例,从岩石的角度来說,这种接触变貭作用可使我們看出一定类型的岩石的物貭組分在变质作用过程中所发生的变化,以及其所产生的特有矿物相;从矿产方面来說,这种变貭作用常常形成有工业价值的矿床。因此,笔者根据自己在此区工作中收集的资料来討論一下該区白云岩的接触变貭作用,文中不妥之处尚希讀者們予以指正。
I. INTRODUCTION In the northern part of Hebei Province, there is a phenomenon of contact change, such as silicargylation, in the contact area between Wumishan dolomite and Yanshanian granodiorite in the upper part of the Sinian. With this change, There are often contact metasomatism deposits, such as the Shouwangtu copper deposit, which is an example. From a rock’s point of view, this contact change effect allows us to see that certain types of rocks occur in the metamorphic process , As well as the unique mineral phases that it produces; from a mineral point of view this transformation often forms deposits of industrial value. Therefore, based on the data collected in the work of this district, the author discusses the role of the dolomites in the area to make contact with each other, and the readers are correct in the article.